一：为什么我的电脑只要下载超过500MB大小的文件就会断电、重启？
可能机器的负荷过大遭成的,
一般机器下载500m的东西,要先在硬盘中检查空间,然后才开是下的,你看看你的硬盘是有没有足够大的空间,
建议你经常的进行磁盘整理,以便空出更大的空间.
还有可能就是超出内存的负荷
检查一下自己机器的配置
二：求奥巴马演讲的台词（英文版）
If there is anyone out there who still doubts that America is a place where all things are possible, who still wonders if the dream of our founders is alive in our time, who still questions the power of our democracy, tonight is your answer.
It's the answer told by lines that stretched around schools and churches in numbers this nation has never seen, by people who waited three hours and four hours, many for the first time in their lives, because they believed that this time must be different, that their voices could be that difference.
It's the answer spoken by young and old, rich and poor, Democrat and Republican, black, white, Hispanic, Asian, Native American, gay, straight, disabled and not disabled. Americans who sent a message to the world that we have never been just a collection of individuals or a collection of red states and blue states.
We are, and always will be, the United States of America.
It's the answer that led those who've been told for so long by so many to be cynical and fearful and doubtful about what we can achieve to put their hands on the arc of history and bend it once more toward the hope of a better day.
It's been a long time coming, but tonight, because of what we did on this date in this election at this defining moment change has come to America.
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